How do I make a song sound like its blasting out of a huge speaker?

How do I make a song sound like its blasting out of a huge speaker?by Kevin Silberberg on Apr 11, 2012 at 2:35:06 am

Hello,

In the film I am making I have a shot of a man on top of a roof with a very large speaker blasting music to the city. The only problem I have is, how am I going to make the song sound like its doing that? I'm not very skilled with this, I was thinking maybe id have to adjust the reverb or something?